"Katana is a trained, disciplined martial artist. She removes herself from Birds of Prey to go on a personal journey in Japantown, San Francisco, and pursue a quest for vengeance against the Sword Clan, the men that killed her husband,” Nocenti said in an interview with MTV. "In 'Katana' #1, she fights COIL, who has a spiral sword, a whip of a sword, and she realizes she's not just up against him, but legions. She is allowing herself to let loose, to unravel a bit, to fight this battle. But when the JLA calls -- she's all business. She's a soldier in an army for them. Back to the restrained, disciplined fighter. She brings that to the team -- a reliable, fearless martial arts master. But as things change in her solo book, that might change in JLA also."